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Water system · PWSID CA1510046

LOST HILLS UTILITY DISTRICT

LOST HILLS, CA · ~2,370 people served

Check your exact address → LOST HILLS overview
100
Excellent
PurityRadar safety score

PWSID

CA1510046

State

California

City

LOST HILLS

Population served

2,370

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

29

Violations on record

0

Unaddressed

11

Health-based

32

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved
Monitoring & reporting · Total coliform began Aug 2015 Resolved
Monitoring & reporting · Total coliform began May 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 2011 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2009 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2009 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2007 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2007 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2007 Resolved
Monitoring & reporting · Arsenic began Oct 2006 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2006 Resolved
Monitoring & reporting · Arsenic began Apr 2006 Resolved

Recent enforcement actions

  • State action · SOX Jul 2024
  • State action · SFL May 2024
  • State action · SOX Mar 2018
  • State action · SIA Feb 2016
  • State action · SOX Feb 2016
  • State action · SFL Jun 2011
  • State action · SIA Feb 2010
  • State action · SOX Jan 2008

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Manganese

5 stations · latest Sep 2020

361 · max 1,050 ug/l · 5

Arsenic

3 stations · latest Sep 2020

14.4 · max 32 ug/l · 3

Fluoride

3 stations · latest Sep 2020

0.23 · max 0.3 mg/l · 3

Uranium

3 stations · latest Sep 2020

0.995 · max 23.9 ug/l · 3

Nitrate

1 station · latest Jul 2020

39.3 · max 39.3 mg/l as N · 2

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA1510046 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.